1. Starter: Calculate the area or volume of the following shapes:
Area & Volume July 2018
Today we are going to be looking at area and volume and how we measure the irregular objects
Starter: Calculate the area or volume of the following shapes: 1. 4.
5 cm
2.5 m
5 cm
2.5 m
5 cm 2. 5.
6 cm
10 mm
12 cm
5 mm
25 mm 3. 6.
10 mm
d = 2 m
10 m

2. Area & Volume July 2018
Today we are going to be looking at area and volume and how we measure the irregular objects
By the end of the lesson we will have been successful when we have:
Estimate the area of irregular shapes
Calculated the volumes of different irregularly shaped objects and recorded your results correctly

3. Area and Volume July 2018
How could we measure the area of our shoe?
Think in your pairs and be prepared to feed back.
‘Who would be the best goal keeper hands in the class’ Use the squared paper to measure the area of one of your hands. You have 10 mins.

4. Volume is the three dimensional space that an object occupies.
Volume July 2018
Volume is the three dimensional space that an object occupies.
Volume is measured in mm3, cm3 and m3.
What does a m3 look like?
Estimate how many Year 7 pupils can fit into 1 m3

5. Volume July 2018
1cm = 1ml
1000 cm3 = 1000 ml = 1 litre or 10dm3
(a dm is 10cm)
What about a pint?
What about a gallon?

6. Volume July 2018
We can use a measuring cylinder to measure the volume or irregular objects.
We need to read the volume at the start (from the bottom of the meniscus) and the volume at the end (from the bottom of the meniscus)

7. Measuring the volume of irregular objects
Write bullet points to say what you are doing
Draw the diagram
Copy the table and fill in the gaps
Object
Volume at start
cm3
Volume at end
Volume of object cm3

8. Volume of water + object / ml
Results
Name
Volume of water / ml
Volume of water + object / ml
Volume of object / ml

9. Conclusion
As the object is lowered into the water, it pushes water out of the way. The volume of the object is the same as the volume of water it displaces. The largest volume I measured was……The smallest volume I measured was……

10. Homework
Area + Volume Worksheets